Wrench.



E. KUKURUDA.

WBBNGH.

APPLIUATION FILED MAY 5, 1910.

Patented Feb`.7, 1911.

EDWARD KUKURUQDA, OFl vSAGINAW, MICHIGAN.

To all whom it may concern:

Be .it known that I, EDWARD KUKURUDA, a subject of the King ofI-Iungary, residing at Saginaw, in the county of Saginaw and State ofB/Iichigan, have invented certain new and` useful Improvements inlvrenches, ofv which the following is a specification, reference beinghad therein to the accompanying drawing.

This invention relates to improvements in wrenches and more especiallyto that class of such devices embodying a stationary and a movable jaw.

The primary object of this invention is the provision of a movable jawin suoli relation to the stationary jaw that the former may be freelymoved longitudinally for operative engagement with the work wit-houtrequiring the manipulation of any adjust- -iiig or securing means.

` A further object of the invention is to provide such a device thatalthough simple in construction and inexpensive to manufacture it is atthe same time an extremely strong and durable tool.

In carrying out these objects I provide a movable jaw having a catch ordog member adapted to coperate with a toothed rack of the shank, saidmovable jaw being freely operable in both directions and resilientlypositioned in its relations to said shank.

With these general objects in view and others thatl will appear as thenatui'eiof the invention is better understood my improvements consist inthe noyel conibination and arrangement of parts hereinafter fullydescribed, illustrated in the accompanying drawings and pointed out inthe appended claims.

In the drawings forming a part of this application and in which likedesignating numerals refer to corresponding parts throughout the severalviews: Figure 1 is a side elevation of my improved wrench, Fig. 2 is afront view thereof, Fig. 3 is a perspective view of the movable jawdetached from the device, F ig. 4 is a perspective view of the pivotedyoke member, and Fig. 5 is a transverse sectional view taken on line ofFig. 1.

Referring more in detail to the drawings, the stationary jaw 10 ismounted upon the shank 11 the latter having a toothed face 12 WRENCH.

l Specicaton of Letters Patent.- Applieat-ion led May-5, 1910. SerialNo. 559,587.,

while said shank is provided at its inner end with a handle 13 in theusual manner.A v

Positionable in operative relation with the stationary jaw is themovable aw mem ber 14 having a cooperating face 15 normally lying insubstantially parallel relation to the operative face of the stationaryjaw 10. f The yoke 16 shown in perspective in Fig. 4 and having thebifurcated arms 17 perf forated as at 18 for receiving .the rivet19 andby which the movable jaw" is 'pivoted thereto, is adapted to mountsaidja-w in ops Patenteaiieb; v, 191:1..

erative position with the shank, itbeing noted that the latter `entendsbetween the arms thereof while the vrearplane,faceof the shank normallyabuts the innerslantin end wall 20 of the yoke. Uponthei'nner obliqueface or end 21of theniovablej'aw member is fixedly secured a-plate.to0th22 in any desired manner such as by the use 'ofl` the holdfast device 23. With the shanky ex; tending through said yoke and thetooth:2`2

in engagement with the teeth 12 y`of the f shank, resilient meansfor'retaining lthe members in this normal operative position becomesnecessary and for thispurpose the helical springs 24 are positionedbetween the inner end .portion of the movableijaw; y

and the rear end portion ofthe pivgtgdz yoke and serve to turn thelattueyiliii'fll'lf pivot pin and in a direction,tgll ,.the, movablejaw, which, thus retainsi# o normally in contact wit-li the rear, ,y ltheshank and the movable. jaw and/tooth 22 in engagement with'thetoothed: face/of the shank. For securing said spring mem` bers 24 tosaid connected members I pref- 3953 Hof fterably mount loops or eyes 25at opposite points upon the movable jaw and similar eye members 26 uponthe inner surface of the end of the yoke. It will be further noted thatthe pivot pin 19 projects through the perforation 26 of the movable jawand that thespace between the arms v17 of the yoke member is not only ofa Width to .receive the shank 11 but also the main portion of themovable jaw which is cut away, as at 27 to render the same ofsubstantially an n' equal thickness to said shank.

The operation of the invention it is believed will be clear from theabove description thereof. With the parts properly assembled andpositioned relatively as disnecessity. of, manipulating any sorewsfrelosed-in;Fig. l, agmovementof the movable jaw ltowardthe stationaryvjaw l0l will re- .sult in a sliding of the tooth 22 overthe teeth 12 ofthe shankuuntil 4 the desiredposition is reached whereupon the tooth 22seats will be HotelV that memorable jaw.` .may .be positioned to engagethekwork'in,oolperation with the stationaryjaw 10, without the bolts;but is aoooniplshedl""merely by Lthe manual sliding'of the"` movable jawitself. Tojdisengage the wrench from the piece of work requires theforcible AreI'nval of the u tooth 22i from its engagement withlthe'shank .by which it is positioned and such movement is allowed byreason of the pivoting of the movable jaw to the ,swinging yoke 16'andthe resilient Connections therebey tgween..v Upon anfunse'atingof theinterengagi'ng teeth, it is evident that a longitudinal movementof'tliefm'o-vable jawtoward the tool handle is at once renderedpossible.

VVhile the'fforms of the inventionhere' in shown and described are whatare believed-'to be preferable embodiments thereof, it is. neverthelessto be understood that minor changes may be made in the fo-rm, proportionand minor points of detail without departing from the spirit and scopeof the invention as set forthin the appended olaims.

Having thus fully described my invention and in what manner the sameisdesigned for use, what I claim as new and desire to secure byLetters-Patent of the United States is:

l. A wrench comprising a shank, a sta- .tionary j aw carried on theouter end thereof,

a toothed inner face provided upon said shank, a movable jaw positionedupon the toothed side of said shank, a fixed tooth secured to said jawand adapted to engage with the teeth of said shank, a yoke pivoted tosaid movable jaw, and said shank loosely y positioned Within said yoke,said movable jaw and yoke resiliently connected together itself againstthe raok tooth contiguouspto which it is positioned. In this operatio-nit upon opposite sides ofthe Shankand at points removed from the pointo'fpivoting therebetween.

wrenolrooniprising a shank, a stationary jaw carried by the outer end ofsaid shank, a plurality of teeth provided upon the inner faceof saidshank, a movable jaw member: positioned adjacent said teeth5afjaw faceprovided atthe outer end of said movable jaw, aplate tooth secured tothe inner 4end of said movable-jaw, said movable jaw provided with adout-,away portion upon'eaoh side thereof, a yoke 'member pivoted tosaidmovable jaw within said out away portions, oppositely projecting armsprovided upon said yoke member and said shank positioned between saidarms, one end of said yoke pro-v vided with aninternal oblique face,resilient members connecting said yoke with said movable jaw and adaptedto normally contact said oblique face with the rear face of E.

said shank.

V3. A'wrenoh comprising a shank, a. stationary jaw carried on the outerend thereof, a plurality of teeth provided upon the inner fac-e of saidshank, a movablejaw member positioned1 adjacent said teeth, a jaw faceprovided at the outer end of said movable jaw, aplate tooth secured tothe inner end of said movable jaw, said movable jawprovided with a outaway portion upon-each i side thereof, a yoke member pivoted to saidmovable jaw wit-hin said out away portions, oppositely project-ing armsprovided upon said yoke member, and said shank posit-ioned between saidarms, one end of said

